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Intellectual property
Classification | Registered title | Registration number | Date of registration |
---|---|---|---|
Patent | Hollow synthesis bridge | No. 10-0756517 | 08/31/2007 |
Patent | Underground structure and construction method | No. 10-0756515 | 08/31/2007 |
Patent | Grouting device and construction method for the prevention of contamination of underground water in | No. 10-0756493 | 08/31/2007 |
Patent | Paper board anchoring device for measuring weak ground | No. 10-0749119 | 08/07/2007 |
Patent | Abandoned well processing device and method in the use of firing urethane packer | No. 10-0741884 | 07/16/2007 |
Patent | Abandoned well processing device and method in the use of firing urethane packer | No. 10-0741883 | 07/16/2007 |
Patent | Arch tunnel 2 construction method | No. 10-0717849 | 05/07/2007 |
Patent | Grouting device and construction method for the prevention of contamination of underground water in | No. 10-0715746 | 05/01/2007 |
Patent | Portable firing urethane packer and pressure soil nailing construction method in the use of them | No. 10-0493927 | 05/27/2005 |
Patent | Construction method of free-cast concrete block for breast wall and also in the use of top-down cons | No. 10-0468035 | 01/19/2005 |